min Uploaded by This Old HouseThis Old House host Kevin O Connor shows how to keep the electricity flowing during power . min Uploaded by This Old HouseUse non metallic wiring to connect the transfer switch to a power inlet outside. . Use the . Once the transfer switch is installed, the system works like this When the electricity goes out, you set up a portable generator outside and plug it into the power inlet box. If the inlet box cable runs to a junction box with power cord, plug the power cord into the transfer switch..